The Mistrale is German tuning firm Gemballa's reworking of the Porsche Panamera, pictures of which have leaked onto the Internet. That means the official info will surface very soon, but as it hasn't yet we're able only to speculate.

The visual makeover comprises new front and rear bumpers and a reflector strip on the boot between the taillights, evocative of the Porsche 959 and 1980s 911s. The huge wheels look at least 20 inches in diameter, and they're likely to be covering a set of uprated brakes because there's every chance that power has been given a boost too.

At present we can only guess as to what's been done under the bonnet, but we'd be very surprised if this was just a cosmetic makeover given Gemballa's predilection for squeezing more power from Porsche V8s. We'll let you know as soon as we do.